LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Hyundai >> 2011 >> Accent GL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (1 Of 2) >> DTC P0068: MAP/MAF-Throttle Position Correlation >> Inspection/Repair >> Component Inspection
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Component Inspection

  1. Check TPS
    1. Ignition "OFF".
    2. Disconnect TPS connector.
    3. Measure resistance terminal 2 and 3 of TP sensor connector (Component side).
      1. Specification:
        ITEM SPECIFICATION CHART

        ITEM Specification
        TPS Resistance (kΩ) 2 kΩ ± 20% (20 °C)
        Fig 1: Measuring Resistance Terminal 2 And 3 Of TP Sensor Connector (Component Side)
        G06881230Courtesy of HYUNDAI MOTOR CO.
    4. Is the measured resistance within specifications?

      YES 

      1. Go to " 2 Check ECM" as below.

      NO 

      1. Check TPS for contamination, deterioration, or damage. Substitute with a known-good TPS and check for proper operation. If the problem is corrected, replace TPS and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  2. Check ECM
    1. Key "OFF". (Don't disconnect sensors.)
    2. Select "vehicle scopemeter" in the menu, and connect channel A of scan tool with terminal 1 of TPS harness connector.
    3. Connect channel B of scan tool with terminal 3 (1) of MAFS (MAPS) harness connector.
    4. Engine start. And check the signal waveforms with stepping on accelerator pedal.
      Fig 2: MAPS And TPS Signal Waveform
      G06881231Courtesy of HYUNDAI MOTOR CO.
    5. Is the signal waveform within specifications?

      YES 

      1. Substitute with a known-good ECM and check for proper operation. If the problem is corrected, replace ECM and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

      NO 

      1. Substitute the sensor which outputs abnormal waveform with a known-good sensor and check for proper operation. If the problem is corrected, replace the sensor and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.